dt-bindings: dts/arm/nxp : add MCUX EDMA Support

add MCUX EDMA support for dts binding

Signed-off-by: Hake Huang <hake.huang@oss.nxp.com>

dts/arm/nxp/nxp_k6x.dtsi

@@ -511,6 +511,25 @@
 			#address-cells = <1>;
 			#size-cells = <0>;
 		};
+
+		edma0: dma-controller@40008000 {
+			#dma-cells = <2>;
+			compatible = "nxp,mcux-edma";
+			dma-channels = <16>;
+			dma-requests = <64>;
+			nxp,mem2mem;
+			reg = <0x40008000 0x1000>,
+				<0x40021000 0x1000>;
+			interrupts = <0 0>, <1 0>, <2 0>, <3 0>,
+				<4 0>, <5 0>, <6 0>, <7 0>,
+				<8 0>, <9 0>, <10 0>, <11 0>,
+				<12 0>, <13 0>, <14 0>, <15 0>,
+				<16 0>;
+			clocks = <&sim KINETIS_SIM_DMA_CLK 0x1040 0x00000002>,
+				<&sim KINETIS_SIM_DMAMUX_CLK 0x103C 0x00000002>;
+			status = "disabled";
+			label = "EDMA0";
+		};
 	};
 };
 

dts/arm/nxp/nxp_rt.dtsi

@@ -601,6 +601,25 @@
 			status = "disabled";
 			label = "CSI";
 		};
+
+		edma0: dma-controller@400e8000 {
+			#dma-cells = <2>;
+			compatible = "nxp,mcux-edma";
+			dma-channels = <32>;
+			dma-requests = <128>;
+			nxp,mem2mem;
+			nxp,a_on;
+			reg = <0x400E8000 0x4000>,
+				<0x400EC000 0x4000>;
+			interrupts = <0 0>, <1 0>, <2 0>, <3 0>,
+				<4 0>, <5 0>, <6 0>, <7 0>,
+				<8 0>, <9 0>, <10 0>, <11 0>,
+				<12 0>, <13 0>, <14 0>, <15 0>,
+				<16 0>;
+			clocks = <&ccm IMX_CCM_EDMA_CLK 0x7C 0x000000C0>;
+			status = "disabled";
+			label = "EDMA0";
+		};
 	};
 };
 

dts/bindings/dma/nxp,mcux-edma.yaml

@@ -0,0 +1,54 @@
+# Copyright (c) 2020, NXP
+# SPDX-License-Identifier: Apache-2.0
+
+description: NXP MCUX EDMA controller
+
+compatible: "nxp,mcux-edma"
+
+include: dma-controller.yaml
+
+properties:
+    reg:
+      required: true
+
+    interrupts:
+      required: true
+
+    dma-channels:
+      required: true
+
+    dma-requests:
+      required: true
+
+    nxp,mem2mem:
+      type: boolean
+      description: If the DMA controller supports memory to memory transfer
+
+    nxp,a_on:
+      type: boolean
+      description: If the DMA controller supports always on
+
+    "#dma-cells":
+      type: int
+      required: true
+      description: Number of items to expect in a DMAMUX specifier
+
+# Parameter syntax of NXP follows the dmamux client dts syntax
+# in the Linux kernel declared in
+# https://git.kernel.org/pub/scm/linux/kernel/git/devicetree/devicetree-rebasing.git/tree/Bindings/dma/fsl-edma.txt
+#
+#- #dma-cells : Must be <2>.
+#  The 1st cell specifies the DMAMUX(0 for DMAMUX0 and 1 for DMAMUX1).
+#    Specific request source can only be multiplexed by specific channels
+#    group called DMAMUX.
+#  The 2nd cell specifies the request source(slot) ID.
+#    See the SoC's reference manual for all the supported request sources.
+# * DMA clients
+# DMA client drivers that uses the DMA function must use the format described
+# in the dma.txt file, using a two-cell specifier for each channel: the 1st
+# specifies the channel group(DMAMUX) in which this request can be multiplexed,
+# and the 2nd specifies the request source.
+
+dma-cells:
+  - mux
+  - source

include/dt-bindings/clock/imx_ccm.h

@@ -15,5 +15,7 @@
 #define IMX_CCM_LPSPI_CLK		5
 #define IMX_CCM_USDHC1_CLK		6
 #define IMX_CCM_USDHC2_CLK		7
+#define IMX_CCM_EDMA_CLK        8
+
 
 #endif /* ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_IMX_CCM_H_ */

include/dt-bindings/clock/kinetis_sim.h

@@ -12,5 +12,7 @@
 #define KINETIS_SIM_BUS_CLK		2
 #define KINETIS_SIM_FAST_PERIPHERAL_CLK	5
 #define KINETIS_SIM_LPO_CLK		19
+#define KINETIS_SIM_DMAMUX_CLK  KINETIS_SIM_BUS_CLK
+#define KINETIS_SIM_DMA_CLK     KINETIS_SIM_CORESYS_CLK
 
 #endif /* ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_KINETIS_SIM_H_ */